Siam Physics Congress 2017

Microstructural Improvement of Hydroxyapatite-ZrO2 Composite Ceramics via Thermal Precipitation Techniques.

25 May 2017, 17:00

1h

Rayong Marriott Resort & Spa

Poster Material Physics and Functional Materials Poster Presentation II

Speaker

Mr Aekgaran Sangmala

Description

Hydroxyapatite-ZrO${}_2$ composite ceramic were synthesized using a thermal precipitation techniques. The chemical precursors were prepared from di-ammonium hydrogen orthophosphate, calcium oxide (CaO) derived from chicken eggshell, zirconium dioxide (ZrO${}_2$) and distilled water. The mixture were heated at the various temperatures from 100 to 700${}^o$C in the furnace with an incremental temperature of 100${}^o$C. The ZrO${}_2$ contents in the composite ceramic were varied from 0 to 15 percent weight of CaO. The prepared composites were then annealed at 300, 600 and 700${}^o$C for 4 h in air. The crystal structure, function group and morphology of all samples were characterized by X-ray diffraction (XRD), Fourier transform infrared spectroscopy (FTIR), field emission scanning electron microscopy (FESEM) and universal testing machine (UTM), respectively. The results indicated that the undoped-ZrO${}_2$ samples hydroxyapatite phase with a hexagonal structure. However, the hydroxyapatite was transformed to the tri-calcium phosphate after thermal treatment at 700${}^o$C. For the doped-ZrO${}_2$ samples, the hydroxyapatite and ZrO${}_2$ phases were found. Moreover, the result showed that the compressive strength of hydroxyapatite-ZrO${}_2$ composite ceramic increased with increasing the ZrO${}_2$ content.

Peer reviewing

Paper

Accepted on 20 May 2017 by Apichart Pattanaporkrattana

fullpaper_ID305.pdf

• fullpaper_ID305.docx